* [PATCH 1/3] target: Add target_show_dynamic_sessions attribute helper
@ 2015-03-07 5:27 Nicholas A. Bellinger
2015-03-07 5:27 ` [PATCH 2/3] iscsi-target: Expose per endpoint dynamic_sessions attribute Nicholas A. Bellinger
` (2 more replies)
0 siblings, 3 replies; 5+ messages in thread
From: Nicholas A. Bellinger @ 2015-03-07 5:27 UTC (permalink / raw)
To: target-devel; +Cc: linux-scsi, Nicholas Bellinger
From: Nicholas Bellinger <nab@linux-iscsi.org>
This patch adds a new helper function that can be used by fabric driver
TPG attributes for dumping the list of active sessions with a dynamically
generated se_node_acl. (generate_node_acl=1).
It prints one se_node_acl->initiatorname per line, up to PAGE_SIZE which
is due to the current limitiation of single page attribute output within
sysfs and configfs code.
Note that if a session is referencing a explicit NodeACL, the InitiatorName
will not appear within dynamic_sessions output.
Reported-by: Andy Grover <agrover@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
---
drivers/target/target_core_transport.c | 24 ++++++++++++++++++++++++
include/target/target_core_fabric.h | 1 +
include/target/target_core_fabric_configfs.h | 5 +++++
3 files changed, 30 insertions(+)
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 0adc0f6..e06c136 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -404,6 +404,30 @@ void target_put_session(struct se_session *se_sess)
}
EXPORT_SYMBOL(target_put_session);
+ssize_t target_show_dynamic_sessions(struct se_portal_group *se_tpg, char *page)
+{
+ struct se_session *se_sess;
+ ssize_t len = 0;
+
+ spin_lock_bh(&se_tpg->session_lock);
+ list_for_each_entry(se_sess, &se_tpg->tpg_sess_list, sess_list) {
+ if (!se_sess->se_node_acl)
+ continue;
+ if (!se_sess->se_node_acl->dynamic_node_acl)
+ continue;
+ if (strlen(se_sess->se_node_acl->initiatorname) + 1 + len > PAGE_SIZE)
+ break;
+
+ len += snprintf(page + len, PAGE_SIZE - len, "%s\n",
+ se_sess->se_node_acl->initiatorname);
+ len += 1; /* Include NULL terminator */
+ }
+ spin_unlock_bh(&se_tpg->session_lock);
+
+ return len;
+}
+EXPORT_SYMBOL(target_show_dynamic_sessions);
+
static void target_complete_nacl(struct kref *kref)
{
struct se_node_acl *nacl = container_of(kref,
diff --git a/include/target/target_core_fabric.h b/include/target/target_core_fabric.h
index 22a4e98e..2f4a250 100644
--- a/include/target/target_core_fabric.h
+++ b/include/target/target_core_fabric.h
@@ -95,6 +95,7 @@ void transport_register_session(struct se_portal_group *,
struct se_node_acl *, struct se_session *, void *);
void target_get_session(struct se_session *);
void target_put_session(struct se_session *);
+ssize_t target_show_dynamic_sessions(struct se_portal_group *, char *);
void transport_free_session(struct se_session *);
void target_put_nacl(struct se_node_acl *);
void transport_deregister_session_configfs(struct se_session *);
diff --git a/include/target/target_core_fabric_configfs.h b/include/target/target_core_fabric_configfs.h
index b32a149..7a0649c 100644
--- a/include/target/target_core_fabric_configfs.h
+++ b/include/target/target_core_fabric_configfs.h
@@ -90,6 +90,11 @@ static struct target_fabric_tpg_attribute _fabric##_tpg_##_name = \
_fabric##_tpg_store_##_name);
+#define TF_TPG_BASE_ATTR_RO(_fabric, _name) \
+static struct target_fabric_tpg_attribute _fabric##_tpg_##_name = \
+ __CONFIGFS_EATTR_RO(_name, \
+ _fabric##_tpg_show_##_name);
+
CONFIGFS_EATTR_STRUCT(target_fabric_wwn, target_fabric_configfs);
#define TF_WWN_ATTR(_fabric, _name, _mode) \
static struct target_fabric_wwn_attribute _fabric##_wwn_##_name = \
--
1.9.1
^ permalink raw reply related [flat|nested] 5+ messages in thread
* [PATCH 2/3] iscsi-target: Expose per endpoint dynamic_sessions attribute
2015-03-07 5:27 [PATCH 1/3] target: Add target_show_dynamic_sessions attribute helper Nicholas A. Bellinger
@ 2015-03-07 5:27 ` Nicholas A. Bellinger
2015-03-07 5:27 ` [PATCH 3/3] tcm_qla2xxx: " Nicholas A. Bellinger
2015-03-08 20:38 ` [PATCH 1/3] target: Add target_show_dynamic_sessions attribute helper Christophe Vu-Brugier
2 siblings, 0 replies; 5+ messages in thread
From: Nicholas A. Bellinger @ 2015-03-07 5:27 UTC (permalink / raw)
To: target-devel; +Cc: linux-scsi, Nicholas Bellinger
From: Nicholas Bellinger <nab@linux-iscsi.org>
This patch exposes a new ../iscsi/$IQN/$TPGT/dynamic_sessions attribute
to dump the currently active sessions by iSCSI InitiatorName that have
been created with dynamically generated se_node_acls.
This information is useful so that user-space can optionally perform
dynamic -> explicit NodeACL conversion based on $INITIATOR_WWPN.
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
---
drivers/target/iscsi/iscsi_target_configfs.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/target/iscsi/iscsi_target_configfs.c b/drivers/target/iscsi/iscsi_target_configfs.c
index 48384b6..95a67f6 100644
--- a/drivers/target/iscsi/iscsi_target_configfs.c
+++ b/drivers/target/iscsi/iscsi_target_configfs.c
@@ -1410,8 +1410,18 @@ out:
TF_TPG_BASE_ATTR(lio_target, enable, S_IRUGO | S_IWUSR);
+static ssize_t lio_target_tpg_show_dynamic_sessions(
+ struct se_portal_group *se_tpg,
+ char *page)
+{
+ return target_show_dynamic_sessions(se_tpg, page);
+}
+
+TF_TPG_BASE_ATTR_RO(lio_target, dynamic_sessions);
+
static struct configfs_attribute *lio_target_tpg_attrs[] = {
&lio_target_tpg_enable.attr,
+ &lio_target_tpg_dynamic_sessions.attr,
NULL,
};
--
1.9.1
^ permalink raw reply related [flat|nested] 5+ messages in thread
* [PATCH 3/3] tcm_qla2xxx: Expose per endpoint dynamic_sessions attribute
2015-03-07 5:27 [PATCH 1/3] target: Add target_show_dynamic_sessions attribute helper Nicholas A. Bellinger
2015-03-07 5:27 ` [PATCH 2/3] iscsi-target: Expose per endpoint dynamic_sessions attribute Nicholas A. Bellinger
@ 2015-03-07 5:27 ` Nicholas A. Bellinger
2015-03-10 4:50 ` Saurav Kashyap
2015-03-08 20:38 ` [PATCH 1/3] target: Add target_show_dynamic_sessions attribute helper Christophe Vu-Brugier
2 siblings, 1 reply; 5+ messages in thread
From: Nicholas A. Bellinger @ 2015-03-07 5:27 UTC (permalink / raw)
To: target-devel; +Cc: linux-scsi, Nicholas Bellinger
From: Nicholas Bellinger <nab@linux-iscsi.org>
This patch exposes a new ../qla2xxx*/$WWPN/$TPGT/dynamic_sessions
attribute to dump the currently active sessions by FC initiator WWPN
that have been created with dynamically generated se_node_acls.
This information is useful so that user-space can optionally perform
dynamic -> explicit NodeACL conversion based on $INITIATOR_WWPN.
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
---
drivers/scsi/qla2xxx/tcm_qla2xxx.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
index 99f43b7..c4f66f5 100644
--- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c
+++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
@@ -1082,8 +1082,18 @@ static ssize_t tcm_qla2xxx_tpg_store_enable(
TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR);
+static ssize_t tcm_qla2xxx_tpg_show_dynamic_sessions(
+ struct se_portal_group *se_tpg,
+ char *page)
+{
+ return target_show_dynamic_sessions(se_tpg, page);
+}
+
+TF_TPG_BASE_ATTR_RO(tcm_qla2xxx, dynamic_sessions);
+
static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
&tcm_qla2xxx_tpg_enable.attr,
+ &tcm_qla2xxx_tpg_dynamic_sessions.attr,
NULL,
};
--
1.9.1
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH 1/3] target: Add target_show_dynamic_sessions attribute helper
2015-03-07 5:27 [PATCH 1/3] target: Add target_show_dynamic_sessions attribute helper Nicholas A. Bellinger
2015-03-07 5:27 ` [PATCH 2/3] iscsi-target: Expose per endpoint dynamic_sessions attribute Nicholas A. Bellinger
2015-03-07 5:27 ` [PATCH 3/3] tcm_qla2xxx: " Nicholas A. Bellinger
@ 2015-03-08 20:38 ` Christophe Vu-Brugier
2 siblings, 0 replies; 5+ messages in thread
From: Christophe Vu-Brugier @ 2015-03-08 20:38 UTC (permalink / raw)
To: Nicholas A. Bellinger; +Cc: target-devel, linux-scsi, Nicholas Bellinger
Hi Nicholas,
On Sat, 7 Mar 2015 05:27:07 +0000, Nicholas A. Bellinger wrote :
> From: Nicholas Bellinger <nab@linux-iscsi.org>
>
> This patch adds a new helper function that can be used by fabric
> driver TPG attributes for dumping the list of active sessions with a
> dynamically generated se_node_acl. (generate_node_acl=1).
>
> It prints one se_node_acl->initiatorname per line, up to PAGE_SIZE
> which is due to the current limitiation of single page attribute
^
limitation
> output within sysfs and configfs code.
>
> Note that if a session is referencing a explicit NodeACL, the
> InitiatorName will not appear within dynamic_sessions output.
>
> Reported-by: Andy Grover <agrover@redhat.com>
> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
> ---
> drivers/target/target_core_transport.c | 24
> ++++++++++++++++++++++++ include/target/target_core_fabric.h
> | 1 + include/target/target_core_fabric_configfs.h | 5 +++++
> 3 files changed, 30 insertions(+)
>
> diff --git a/drivers/target/target_core_transport.c
> b/drivers/target/target_core_transport.c index 0adc0f6..e06c136 100644
> --- a/drivers/target/target_core_transport.c
> +++ b/drivers/target/target_core_transport.c
> @@ -404,6 +404,30 @@ void target_put_session(struct se_session
> *se_sess) }
> EXPORT_SYMBOL(target_put_session);
>
> +ssize_t target_show_dynamic_sessions(struct se_portal_group *se_tpg,
> char *page) +{
> + struct se_session *se_sess;
> + ssize_t len = 0;
> +
> + spin_lock_bh(&se_tpg->session_lock);
> + list_for_each_entry(se_sess, &se_tpg->tpg_sess_list,
> sess_list) {
> + if (!se_sess->se_node_acl)
> + continue;
> + if (!se_sess->se_node_acl->dynamic_node_acl)
> + continue;
> + if (strlen(se_sess->se_node_acl->initiatorname) + 1
> + len > PAGE_SIZE)
> + break;
> +
> + len += snprintf(page + len, PAGE_SIZE - len, "%s\n",
> + se_sess->se_node_acl->initiatorname);
> + len += 1; /* Include NULL terminator */
I don't understand why a NUL character is needed to separate the
initiator names. Maybe you want to put a NUL character at the end of
the string but I am not sure it is necessary (for instance
lio_target_nacl_show_info() does not do that).
With best regards,
> + }
> + spin_unlock_bh(&se_tpg->session_lock);
> +
> + return len;
> +}
> +EXPORT_SYMBOL(target_show_dynamic_sessions);
> +
> static void target_complete_nacl(struct kref *kref)
> {
> struct se_node_acl *nacl = container_of(kref,
> diff --git a/include/target/target_core_fabric.h
> b/include/target/target_core_fabric.h index 22a4e98e..2f4a250 100644
> --- a/include/target/target_core_fabric.h
> +++ b/include/target/target_core_fabric.h
> @@ -95,6 +95,7 @@ void transport_register_session(struct
> se_portal_group *, struct se_node_acl *, struct se_session *, void *);
> void target_get_session(struct se_session *);
> void target_put_session(struct se_session *);
> +ssize_t target_show_dynamic_sessions(struct se_portal_group
> *, char *); void transport_free_session(struct se_session *);
> void target_put_nacl(struct se_node_acl *);
> void transport_deregister_session_configfs(struct se_session
> *); diff --git a/include/target/target_core_fabric_configfs.h
> b/include/target/target_core_fabric_configfs.h index b32a149..7a0649c
> 100644 --- a/include/target/target_core_fabric_configfs.h
> +++ b/include/target/target_core_fabric_configfs.h
> @@ -90,6 +90,11 @@ static struct target_fabric_tpg_attribute
> _fabric##_tpg_##_name = \ _fabric##_tpg_store_##_name);
>
>
> +#define TF_TPG_BASE_ATTR_RO(_fabric,
> _name) \ +static struct
> target_fabric_tpg_attribute _fabric##_tpg_##_name = \
> +
> __CONFIGFS_EATTR_RO(_name, \
> + _fabric##_tpg_show_##_name);
> +
> CONFIGFS_EATTR_STRUCT(target_fabric_wwn, target_fabric_configfs);
> #define TF_WWN_ATTR(_fabric, _name,
> _mode) \ static struct
> target_fabric_wwn_attribute _fabric##_wwn_##_name = \
--
Christophe Vu-Brugier
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH 3/3] tcm_qla2xxx: Expose per endpoint dynamic_sessions attribute
2015-03-07 5:27 ` [PATCH 3/3] tcm_qla2xxx: " Nicholas A. Bellinger
@ 2015-03-10 4:50 ` Saurav Kashyap
0 siblings, 0 replies; 5+ messages in thread
From: Saurav Kashyap @ 2015-03-10 4:50 UTC (permalink / raw)
To: Nicholas A. Bellinger, target-devel; +Cc: linux-scsi, Nicholas Bellinger
Acked-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Thanks,
~Saurav
>From: Nicholas Bellinger <nab@linux-iscsi.org>
>
>This patch exposes a new ../qla2xxx*/$WWPN/$TPGT/dynamic_sessions
>attribute to dump the currently active sessions by FC initiator WWPN
>that have been created with dynamically generated se_node_acls.
>
>This information is useful so that user-space can optionally perform
>dynamic -> explicit NodeACL conversion based on $INITIATOR_WWPN.
>
>Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
>---
> drivers/scsi/qla2xxx/tcm_qla2xxx.c | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
>diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c
>b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
>index 99f43b7..c4f66f5 100644
>--- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c
>+++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
>@@ -1082,8 +1082,18 @@ static ssize_t tcm_qla2xxx_tpg_store_enable(
>
> TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR);
>
>+static ssize_t tcm_qla2xxx_tpg_show_dynamic_sessions(
>+ struct se_portal_group *se_tpg,
>+ char *page)
>+{
>+ return target_show_dynamic_sessions(se_tpg, page);
>+}
>+
>+TF_TPG_BASE_ATTR_RO(tcm_qla2xxx, dynamic_sessions);
>+
> static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
> &tcm_qla2xxx_tpg_enable.attr,
>+ &tcm_qla2xxx_tpg_dynamic_sessions.attr,
> NULL,
> };
>
>--
>1.9.1
>
>--
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^ permalink raw reply [flat|nested] 5+ messages in thread
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2015-03-07 5:27 [PATCH 1/3] target: Add target_show_dynamic_sessions attribute helper Nicholas A. Bellinger
2015-03-07 5:27 ` [PATCH 2/3] iscsi-target: Expose per endpoint dynamic_sessions attribute Nicholas A. Bellinger
2015-03-07 5:27 ` [PATCH 3/3] tcm_qla2xxx: " Nicholas A. Bellinger
2015-03-10 4:50 ` Saurav Kashyap
2015-03-08 20:38 ` [PATCH 1/3] target: Add target_show_dynamic_sessions attribute helper Christophe Vu-Brugier
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